halite and pyroxene
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haltite breaks easily into distinct sheets. Also Pyroxene is another, it breaks at 90 degree angles in 2 directions.
A frustum of a cone, or a sphere sliced by two planes are a couple of examples.
A kite has 4 right angles (all angles of the kite are right angles), since the kite is parallel. If the kite was cyclic, then 2 right angles. And if normal kite, then 0 right angles.
No, pentagons to not have right angles.
when its angles are right angles apex 5.5.3 quiz geometry.